Enzyme-containing granules coated with hydrolyzed polyvinyl alcohol or copolymer thereof
First Claim
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1. An enzyme-containing granule comprising:
- a) a non-enzyme containing core comprising a water soluble or water dispersible material coated with polyvinyl alcohol or copolymer thereof hydrolyzed about 70-90%;
an enzyme layer comprising a mixture of at least one enzyme and polyvinyl alcohol or copolymer thereof hydrolyzed about 98-99%; and
c) an outer coating layer comprising polyvinyl alcohol or copolymer thereof hydrolyzed about 70-90%.
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Abstract
A granular enzyme composition is produced, having reduced tendencies to form dust and leave residue, and exhibiting improved stability and delayed release characteristics. The granular composition comprises a core, an enzyme layer and an outer coating layer. The enzyme layer, and optionally the core and outer coating layer, contain a vinyl polymer. The vinyl polymer is preferably a hydrolyzed polyvinyl alcohol or copolymer thereof. The hydrolyzed polyvinyl alcohol has varying degrees of hydrolysis in the core, enzyme layer and outer coating layer. Also disclosed are methods for making such enzyme-containing granules, the methods having greatly reduced processing time.
144 Citations
38 Claims
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1. An enzyme-containing granule comprising:
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a) a non-enzyme containing core comprising a water soluble or water dispersible material coated with polyvinyl alcohol or copolymer thereof hydrolyzed about 70-90%; an enzyme layer comprising a mixture of at least one enzyme and polyvinyl alcohol or copolymer thereof hydrolyzed about 98-99%; and c) an outer coating layer comprising polyvinyl alcohol or copolymer thereof hydrolyzed about 70-90%. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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23. An enzyme-containing granule comprising:
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a) a non-enzyme containing nonpareil core; b) an enzyme layer comprising at least one enzyme and polyvinyl alcohol hydrolyzed about 98-99% and having low viscosity; and c) an outer coating layer comprising polyvinyl alcohol hydrolyzed about 70-90% and having low viscosity. - View Dependent Claims (24, 25, 26, 27, 28)
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29. An enzyme-containing granule comprising:
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a) a non-enzyme containing nonpareil core coated with polyvinyl alcohol hydrolyzed about 70-90% and having low viscosity; b) an enzyme layer comprising at least one enzyme and polyvinyl alcohol hydrolyzed about 98-99% and having low viscosity; and c) an outer coating layer comprising a polyvinyl alcohol hydrolyzed about 70-90% and having a low viscosity, a low residue pigment and a linear alkane or alkene primary alcohol of 9-15 carbon atom chain length, or an ethoxylate or ethoxysulfate derivative thereof. - View Dependent Claims (30, 31, 32, 33)
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34. A method for making an enzyme-containing granule, said method comprising:
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a) selecting a water soluble or dispersible core material; b) coating the core of step a) with an enzyme layer comprising a mixture of at least one enzyme and polyvinyl alcohol or copolymer thereof hydrolyzed about 98-99%; and c) coating the product of step b) with polyvinyl alcohol or copolymer thereof hydrolyzed about 70-90%;
alone or in combination with one or more pigments or lubricants. - View Dependent Claims (35, 36, 37, 38)
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Specification